Upendra : Once in San Francisco Prabhupada was trying to translate, when there was some noise in his apartment. He wanted that noise stopped. The problem was that we couldn’t hear any noise. It was quiet. A few devotees tried to hear the noise. Prabhupada said, “You don’t hear it?” We said, “No.” We looked for a dripping faucet. We listened to the pipes.
Then I found a heater in the hallway with a flickering pilot light, so I turned the gas off completely, and from his room Prabhupada said, “That’s it.” He was very sensitive. When he heard a door slam, he said it broke his heart. It broke his heart to hear a door slam. As Westerners we would slam doors regularly, but we learned not do that around Prabhupada.
Reference: Memories Anecdotes of a Modern Day Saint – Volume 2 by Siddhanta Dasa